/**
 * Copyright (C) 2015 Red Hat, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.fabric8.kubernetes.examples;

import io.fabric8.kubernetes.api.model.IntOrString;
import io.fabric8.kubernetes.api.model.policy.PodDisruptionBudget;
import io.fabric8.kubernetes.api.model.policy.PodDisruptionBudgetBuilder;
import io.fabric8.kubernetes.client.Config;
import io.fabric8.kubernetes.client.ConfigBuilder;
import io.fabric8.kubernetes.client.DefaultKubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClientException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Collections;


public class PodDisruptionBudgetExample {
  private static final Logger logger = LoggerFactory.getLogger(PodDisruptionBudgetExample.class);

  public static void main(String args[]) throws InterruptedException {
    String master = "https://192.168.99.100:8443/";
    if (args.length == 1) {
      master = args[0];
    }

    log("Using master with url ", master);
    Config config = new ConfigBuilder().withMasterUrl(master).build();
    try (final KubernetesClient client = new DefaultKubernetesClient(config)) {
      final String namespace = "default";

      PodDisruptionBudget podDisruptionBudget = new PodDisruptionBudgetBuilder()
        .withNewMetadata().withName("zk-pkb").endMetadata()
        .withNewSpec()
        .withMaxUnavailable(new IntOrString("1%"))
        .withNewSelector()
        .withMatchLabels(Collections.singletonMap("app", "zookeeper"))
        .endSelector()
        .endSpec()
        .build();

      log("Current namespace is", namespace);
      client.policy().podDisruptionBudget().inNamespace(namespace).create(podDisruptionBudget);

    } catch (KubernetesClientException e) {
      log("Could not create resource", e.getMessage());
    }
  }

  private static void log(String action, Object obj) {
    logger.info("{}: {}", action, obj);
  }

  private static void log(String action) {
    logger.info(action);
  }
}
